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Thread: Hydraulic headscratching

  1. #1
    Junior Member
    Join Date
    Jul 2017
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    Herefordshire
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    Hydraulic headscratching

    Here is an interesting hydraulic problem that has flummoxed me for a while now, I was wondering if anyone else has had this problem.
    Case 4230, all hydraulic functions work beautifully, steering, loader, back end, brakes etc., the problem is there is no oil flow through the oil cooler, unless the tractor is in reverse, oil flowing fine then, just not when driving forward. It is a bit of a nuisance when mowing and tedding grass, quite why the forward reverse shuttle would change the oil flow I don't know.
    Any suggestions would be appreciated on what it could be.

  2. #2
    Senior Member
    Join Date
    Feb 2013
    Location
    near Worcester
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    Re: Hydraulic headscratching

    Quote Originally Posted by The red one View Post
    Here is an interesting hydraulic problem that has flummoxed me for a while now, I was wondering if anyone else has had this problem.
    Case 4230, all hydraulic functions work beautifully, steering, loader, back end, brakes etc., the problem is there is no oil flow through the oil cooler, unless the tractor is in reverse, oil flowing fine then, just not when driving forward. It is a bit of a nuisance when mowing and tedding grass, quite why the forward reverse shuttle would change the oil flow I don't know.
    Any suggestions would be appreciated on what it could be.
    Not 100% on these tractors...... has some body fitted the pipes the wrong way round where they originate? The flow to the cooler will likely be on a bypass circuit and so could quite easily stop when the oil flow changes in the shuttle valve but should have oil flowing through it during normal operation.

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